A new method for monitoring deep body temperature from the skin surface.

1. A new technique for monitoring the deep body temperature is described. The technique depends on creating a zone of zero heat-flow across the body shell; this brings the deep body temperature to the skin surface where it is measured with a simple electronic thermometer. 2. The new device gives a temperature closely comparable with other methods for measuring the deep body temperature in the resting subject, and is simple to use and socially acceptable.